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8018-CC-12

數(shù)控編程工藝及加工效率的研究

由于后控板塑件在洗衣機(jī)上為外觀件，表面光潔度要求較高，所以在模具型腔加工制造過(guò)程中必須保證型腔尺寸的公差要求和表面粗糙度要求。對(duì)于該模具型腔零件，從內(nèi)向外主要由以下幾部分構(gòu)成：塑件型腔面、分型面、排氣槽、側(cè)抽芯槽、模架面、回程桿墊片槽等。在編制數(shù)控編程工藝時(shí)，一般按照整體粗加工、分型面半精加工、分型面精加工、型腔面半精加工、型腔面精加工、型腔局部形狀清角的工藝思路進(jìn)行編程，并按照分區(qū)域編程的思路，逐漸完成整體零件的編程工作。



圖1 洗衣機(jī)后控板模具型腔

2.1 整體粗加工刀具的選擇

在編制粗加工程序時(shí)，粗加工刀具型號(hào)的選擇直接決定了開粗的加工效率。若開粗刀具選擇過(guò)小，致使每刀的下刀量較小，而且刀具的進(jìn)給速度也較小，最終導(dǎo)致工件的加工效率很低。若開粗刀具選擇過(guò)大，表面上看起來(lái)粗加工時(shí)間很少，但是開粗效果不理想，本應(yīng)開粗到位的區(qū)域沒有開粗到位，需要增加整體中粗程序或大范圍的清角程序，這樣總體的加工時(shí)間也會(huì)增加。所以在粗加工刀具選擇方面，不但要考慮到工件的整體尺寸大小，還要考慮該零件的材料去除量大小。對(duì)于中小型零件來(lái)說(shuō)，原則上把開粗時(shí)間 控 制 在 5h 以 內(nèi) ，初 步 選 定 開 粗 刀 具 為 直 徑 為 32mm的牛鼻刀，刀具定義為D32R0.8mm。
2.2 型腔精加工刀具的選擇

在對(duì)模具零件型腔進(jìn)行精加工時(shí)，由于模具的型腔面在塑件上為外觀面，表面光潔度要求較高，并考慮到模具的型腔面大部分為曲面，所以在精加工刀具選擇方面，優(yōu)先選擇球頭銑刀進(jìn)行加工，刀具符號(hào)用B及 R 表 示 ，如 直 徑 為 20mm 的 球 頭 刀 定 義 為B20R10mm。本次研究列出了 3 種精加工刀具選擇方案：第 1種方案為大直徑球頭銑刀（B16R8mm）整體精加工、小直徑球頭銑刀（B8R4mm）局部清角的編程加工工藝；第 2 種方案為較大直徑球頭銑刀（B12R6mm）整體光刀、小直徑球頭銑刀（B8R4mm）清角的編程加工工藝；第3種方案為整體用小直徑球頭（B8R4mm）刀一次加工到位，如表 1 所示。然后對(duì)以下

上億庫(kù)存，國(guó)內(nèi)外近千個(gè)倉(cāng)庫(kù)，公司部分產(chǎn)品型號(hào)如下，歡迎聯(lián)系哦~！

194R-R9 SHAFT, SQUARE, 10MM, FOR S3 HANDLE

2090-CFBM7DD-CEAA25 MP-Series 25m Servo Feedback Cable

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EDS-308-M-SC-T C1 D2 7-port 10/100, 1 port multi-mode SC fiber (-40 to 75 deg C op temp)

GC647PCM001 GlobalCare Complete for Proficy Change Management Server - 1 Concurrent User

IC220STR001 MOTOR STARTER DIRECT, 1.5KW/400VAC

IC646TBSPMPS800 Smart Process Monitoring Process+ server 800 loops

IC647HSTSC1250KM Server to Server Collector for Historian - Standard Server 1,250,000 Points (M4 Key)

IC660BBA025 Block 24/48Vdc Analog Current Source 6 Outputs

IC694MDL740 Output module 12/24 VDC 0.5 amps 16 points, positive logic.

IC756WDJ001E-28 DataViews Development System for Visual Basic & Java 1 User, English v2.8

MicroLogix 1500/1769 System 1764-DAT DATA ACCESS TOOL

PLC-5/1771 System 1784-CP10 CABLE ASSY, 10FT/3.20M, IBM AT OR COMPATIBLE CMPTR

Distributed I/O 1797-IRT8 EX RTD/THERMOCOUPLE/MV INPUT MODULE, 16 BIT, 8 PT.

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A06B-0128-B575#7076 A6/3000 Servo Motor, IP67 Sealing, 64K Serial Encoder

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IC752BTS400 Display Station 1084 - 10.4" active matrix VGA (640x480) resistive touch screen with integrated keypad, Pentium 133, 32MB, 2 Gig hard drive, expansion slots, Ethernet, with CIMPLICITY HMI and Win 95

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61F-G 自動(dòng)供水和排水控制?電源:110/220VAC

1492-SPM3C300 MCB Supplementary Protector 30 A

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150-SC1NUD SMC-50 SOLID STATE MOTOR CONTROLLER 210A

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2099-BM07-S Kinetix 7000 30kW Servo Drive

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Pico Controllers 1760-MM1 MEMORY MODULE FOR 12 I/O PICO CONTROLLER

PLC-5/1771 System 1771-OA 120V AC OUTPUT MODULE, 8 OUTPUTS

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22B-V6P0C104 PowerFlex 40 1.1 kW (1.5 Hp) AC Drive

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IC647PCMSCH Proficy Change Management Scheduler

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GC647PRTHE010 GlobalCare Complete - Proficy Portal Historian Edition Client Pack 10 Users Ver 3.0

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IC646PCN110 OpenProcess Operator Console (700 I/O)

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Motion Control 2090-XXNFMP-S05 CABLE,NON-FLEX,MOTOR FEEDBACK,MP/1326AB,5M

CBL-H1IC-15 Serial Cable, S2K, IMC & Target ARS RS-232 Communication, 15 Ft.

IC641PBE643 Alarm Master, 3.5" & 5.25" Format

IC800SLR002 Ext. Regen Resistor, 100 Ohm 225 W for 30-750W 230VAC SL Amplifiers

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2711P-B6M20D8 PanelView Plus 6 Graphic Terminal

280-PWRM35B-M25 ArmorConnect 3-PH Power Media trnk cable

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1494V-RB2 Connecting Rod

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1756-OB32K ControlLogix 32 Point Digital Output

188-K1C005-N Miniature Circuit Breaker 0.5 A

194E-G3665 Abs Thermoplstc Encl 175 X 230 X 120 mm

2090-CFBM7DF-CDAF50 MP-Series 50 m Length Feedback Cable

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BC646OEM0300 OEM Edge - Machine Edition Kit (Approval Required)

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IC200ALG240LT ANALOG INPUT 16 BIT VOLTAGE/CURRENT ISOLATED 8 CH (LT)

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IC647IFPLSR00900C iFIX Plus SCADA 900 I/O Server (M1Component Part)

IC660MLD025 Label for IC660BBD025 (Qty 100)

IC697BEM721 I/O Link Interface Module for the Series 90-70

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Support F1794-ACN15SERB FIRMWARE UPGRADE FOR 1794-ACN15 I/O MODULE

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RSI Software Products 9399-WCSUG WINTELLIGENT VISION USER'S GUIDE

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20DC030A0NYNACASE PowerFlex 700S AC Drive 20D

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25B-E1P7N104 PowerFlex 525 0.75kW (1Hp) AC Drive

280-BRCAP-M25 Cap, Sealing for M25 Source Brake

FR-F740-1.5K 2.7KVA 3.5A 1.5KW 3相AC380V/50Hz/60Hz

1492-LG2Q IEC Term Blck 3.5x75x29.5mm Spr Clp

1494F-P2 Disconnect Switch Handle

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1585D-E4UBDE-0M3 1585D Ethernet Media Patchcord

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1794-IB8 Flex 8 Point Digital Input Module

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2080-LC30-10QWB Micro830 10 I/O Controller

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MicroLogix 1500/1769 System D1764-UM001AUSP MICROLOGIX 1500 PROG. CONTROLLER USER MANUAL

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Support 9323-PA2GR SUPT REINSTATEMENT CONTRACT FOR 9323PA2G

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Motion Control 2094-BC01-M01 MODULE, INTEGRATED, 400/460V, 6KW CONV. 9A INV.

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IC752CBT010RR Datapanel 320T ME (Mono Expansion): 320x240 1/4 VGA Monochrome LCD with 80386SX/40 PC processor. Analog touch screen with text, bitmaps, bar graphs, real time clock. With 2M memory and PC/104 capability.

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